.o_form_layout_split_container {
    display: flex;
    flex-direction: row;
    width: 100%;
    height: 100%;

    .o_form_splitter,
    .o_form_splitter_placeholder {
        width: 6px;
        width: 6px;
        background: var(--border-color, #e0e0e0);
        cursor: ew-resize;
        z-index: 999;
        transition: background 0.2s;
        height: 100%; // 关键
        align-self: stretch;

        &:hover,
        &.dragging {
            background: var(--primary, #1976d2);
        }
    }

    .o_form_sheet_bg,
    .o-mail-ChatterContainer {
        transition: width 0.2s;
    }


    // .o_form_sheet_bg {
    //     &.has_seat_form_split_ratio {
    //         >.o_form_sheet {
    //             max-width: 90% !important;
    //         }
    //     }

    // }
}